107 |
|
|
108 |
|
|
109 |
// The main client requester call executive. |
// The main client requester call executive. |
110 |
lscp_status_t lscp_client_call ( lscp_client_t *pClient, const char *pszQuery ) |
lscp_status_t lscp_client_call ( lscp_client_t *pClient, const char *pszQuery, int iResult ) |
111 |
{ |
{ |
112 |
int cchQuery; |
int cchQuery; |
113 |
char achResult[LSCP_BUFSIZ]; |
char achBuffer[LSCP_BUFSIZ]; |
114 |
int cchResult; |
int cchBuffer; |
115 |
const char *pszSeps = ":[]"; |
const char *pszSeps = ":[]"; |
116 |
char *pszResult; |
char *pszBuffer; |
117 |
char *pszToken; |
char *pszToken; |
118 |
char *pch; |
char *pch; |
119 |
int iErrno; |
int iErrno; |
120 |
|
char *pszResult; |
121 |
|
int cchResult; |
122 |
|
|
123 |
lscp_status_t ret = LSCP_FAILED; |
lscp_status_t ret = LSCP_FAILED; |
124 |
|
|
125 |
if (pClient == NULL) |
if (pClient == NULL) |
126 |
return ret; |
return ret; |
127 |
|
|
|
pszResult = NULL; |
|
128 |
iErrno = -1; |
iErrno = -1; |
129 |
|
cchResult = 0; |
130 |
|
pszResult = NULL; |
131 |
|
pszBuffer = NULL; |
132 |
|
|
133 |
// Check if command socket socket is still valid. |
// Check if command socket socket is still valid. |
134 |
if (pClient->cmd.sock == INVALID_SOCKET) { |
if (pClient->cmd.sock == INVALID_SOCKET) { |
135 |
pszResult = "Connection closed or no longer valid"; |
pszResult = "Connection closed or no longer valid"; |
136 |
lscp_client_set_result(pClient, pszResult, iErrno); |
lscp_client_set_result(pClient, pszResult, iErrno); |
137 |
return ret; |
return ret; |
138 |
} |
} |
139 |
|
|
140 |
// Check if last transaction has timed out, in which case |
// Check if last transaction has timed out, in which case |
141 |
// we'll retry wait and flush for some pending garbage... |
// we'll retry wait and flush for some pending garbage... |
142 |
if (pClient->iTimeoutCount > 0) { |
if (pClient->iTimeoutCount > 0) { |
143 |
cchResult = sizeof(achResult); |
// We'll hope to get rid of timeout trouble... |
144 |
ret = lscp_client_recv(pClient, achResult, &cchResult, pClient->iTimeout); |
pClient->iTimeoutCount = 0; |
145 |
if (ret == LSCP_OK) { |
cchBuffer = sizeof(achBuffer); |
146 |
// We've got rid of timeout trouble (hopefully). |
ret = lscp_client_recv(pClient, achBuffer, &cchBuffer, pClient->iTimeout); |
147 |
pClient->iTimeoutCount = 0; |
if (ret != LSCP_OK) { |
148 |
} else { |
// Things seems to be unresolved. Fake a result message. |
149 |
// Things are worse than before. Fake a result message. |
iErrno = (int) ret; |
150 |
iErrno = (int) ret; |
pszResult = "Failure during flush timeout operation"; |
151 |
pszResult = "Failure during flush timeout operation"; |
lscp_client_set_result(pClient, pszResult, iErrno); |
152 |
lscp_client_set_result(pClient, pszResult, iErrno); |
return ret; |
153 |
return ret; |
} |
154 |
} |
} |
155 |
} |
|
|
|
|
156 |
// Send data, and then, wait for the result... |
// Send data, and then, wait for the result... |
157 |
cchQuery = strlen(pszQuery); |
cchQuery = strlen(pszQuery); |
158 |
if (send(pClient->cmd.sock, pszQuery, cchQuery, 0) < cchQuery) { |
if (send(pClient->cmd.sock, pszQuery, cchQuery, 0) < cchQuery) { |
161 |
lscp_client_set_result(pClient, pszResult, iErrno); |
lscp_client_set_result(pClient, pszResult, iErrno); |
162 |
return ret; |
return ret; |
163 |
} |
} |
164 |
|
|
165 |
// Wait for receive event... |
// Keep receiving while result is not the expected one: |
166 |
cchResult = sizeof(achResult); |
// single-line result (iResult = 0) : one single CRLF ends the receipt; |
167 |
ret = lscp_client_recv(pClient, achResult, &cchResult, pClient->iTimeout); |
// multi-line result (iResult > 0) : one "." followed by a last CRLF; |
168 |
|
|
169 |
switch (ret) { |
while (pszResult == NULL) { |
170 |
|
|
171 |
case LSCP_OK: |
// Wait for receive event... |
172 |
// Always force the result to be null terminated (and trim trailing CRLFs)! |
cchBuffer = sizeof(achBuffer) - 1; |
173 |
while (cchResult > 0 && (achResult[cchResult - 1] == '\n' || achResult[cchResult- 1] == '\r')) |
ret = lscp_client_recv(pClient, achBuffer, &cchBuffer, pClient->iTimeout); |
174 |
cchResult--; |
|
175 |
achResult[cchResult] = (char) 0; |
switch (ret) { |
176 |
// Check if the response it's an error or warning message. |
|
177 |
if (strncasecmp(achResult, "WRN:", 4) == 0) |
case LSCP_OK: |
178 |
ret = LSCP_WARNING; |
// Always force the result to be null terminated. |
179 |
else if (strncasecmp(achResult, "ERR:", 4) == 0) |
achBuffer[cchBuffer] = (char) 0; |
180 |
ret = LSCP_ERROR; |
// Check if the response it's an error or warning message. |
181 |
// So we got a result... |
if (strncasecmp(achBuffer, "WRN:", 4) == 0) |
182 |
if (ret == LSCP_OK) { |
ret = LSCP_WARNING; |
183 |
// Reset errno in case of success. |
else if (strncasecmp(achBuffer, "ERR:", 4) == 0) |
184 |
iErrno = 0; |
ret = LSCP_ERROR; |
185 |
// Is it a special successful response? |
// So we got a result... |
186 |
if (strncasecmp(achResult, "OK[", 3) == 0) { |
if (ret == LSCP_OK) { |
187 |
// Parse the OK message, get the return string under brackets... |
// Reset errno in case of success. |
188 |
pszToken = lscp_strtok(achResult, pszSeps, &(pch)); |
iErrno = 0; |
189 |
if (pszToken) |
// Is it a special successful response? |
190 |
pszResult = lscp_strtok(NULL, pszSeps, &(pch)); |
if (iResult < 1 && strncasecmp(achBuffer, "OK[", 3) == 0) { |
191 |
} |
// Parse the OK message, get the return string under brackets... |
192 |
else pszResult = achResult; |
pszToken = lscp_strtok(achBuffer, pszSeps, &(pch)); |
193 |
// The result string is now set to the command response, if any. |
if (pszToken) |
194 |
} else { |
pszResult = lscp_strtok(NULL, pszSeps, &(pch)); |
195 |
// Parse the error/warning message, skip first colon... |
} else { |
196 |
pszToken = lscp_strtok(achResult, pszSeps, &(pch)); |
// It can be specially long response... |
197 |
if (pszToken) { |
cchResult += sizeof(achBuffer); |
198 |
// Get the error number... |
pszResult = malloc(cchResult + 1); |
199 |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
pszResult[0] = (char) 0; |
200 |
|
if (pszBuffer) { |
201 |
|
strcat(pszResult, pszBuffer); |
202 |
|
free(pszBuffer); |
203 |
|
} |
204 |
|
strcat(pszResult, achBuffer); |
205 |
|
pszBuffer = pszResult; |
206 |
|
pszResult = NULL; |
207 |
|
// Check for correct end-of-transmission... |
208 |
|
// Depending whether its single or multi-line we'll |
209 |
|
// flag end-of-transmission... |
210 |
|
cchBuffer = strlen(pszBuffer); |
211 |
|
if (cchBuffer > 2 |
212 |
|
&& pszBuffer[cchBuffer - 1] == '\n' |
213 |
|
&& pszBuffer[cchBuffer - 2] == '\r' |
214 |
|
&& (iResult < 1 || pszBuffer[cchBuffer - 3] == '.')) { |
215 |
|
// Get rid of the trailing dot and CRLF anyway... |
216 |
|
while (cchBuffer > 0 && ( |
217 |
|
pszBuffer[cchBuffer - 1] == '\r' || |
218 |
|
pszBuffer[cchBuffer - 1] == '\n' || |
219 |
|
pszBuffer[cchBuffer - 1] == '.')) |
220 |
|
cchBuffer--; |
221 |
|
pszBuffer[cchBuffer] = (char) 0; |
222 |
|
pszResult = pszBuffer; |
223 |
|
} |
224 |
|
} |
225 |
|
// The result string is now set to the command response, if any. |
226 |
|
} else { |
227 |
|
// Parse the error/warning message, skip first colon... |
228 |
|
pszToken = lscp_strtok(achBuffer, pszSeps, &(pch)); |
229 |
if (pszToken) { |
if (pszToken) { |
230 |
iErrno = atoi(pszToken); |
// Get the error number... |
231 |
// And make the message text our final result. |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
232 |
pszResult = lscp_strtok(NULL, pszSeps, &(pch)); |
if (pszToken) { |
233 |
|
iErrno = atoi(pszToken); |
234 |
|
// And make the message text our final result. |
235 |
|
pszResult = lscp_strtok(NULL, pszSeps, &(pch)); |
236 |
|
} |
237 |
} |
} |
238 |
|
// The result string is set to the error/warning message text. |
239 |
} |
} |
240 |
// The result string is set to the error/warning message text. |
break; |
241 |
|
|
242 |
|
case LSCP_TIMEOUT: |
243 |
|
// We have trouble... |
244 |
|
pClient->iTimeoutCount++; |
245 |
|
// Fake a result message. |
246 |
|
pszResult = "Timeout during receive operation"; |
247 |
|
iErrno = (int) ret; |
248 |
|
break; |
249 |
|
|
250 |
|
case LSCP_QUIT: |
251 |
|
// Fake a result message. |
252 |
|
pszResult = "Server terminated the connection"; |
253 |
|
iErrno = (int) ret; |
254 |
|
break; |
255 |
|
|
256 |
|
case LSCP_FAILED: |
257 |
|
default: |
258 |
|
// What's down? |
259 |
|
pszResult = "Failure during receive operation"; |
260 |
|
break; |
261 |
} |
} |
|
break; |
|
|
|
|
|
case LSCP_TIMEOUT: |
|
|
// We have trouble... |
|
|
pClient->iTimeoutCount++; |
|
|
// Fake a result message. |
|
|
pszResult = "Timeout during receive operation"; |
|
|
iErrno = (int) ret; |
|
|
break; |
|
|
|
|
|
case LSCP_QUIT: |
|
|
// Fake a result message. |
|
|
pszResult = "Server terminated the connection"; |
|
|
iErrno = (int) ret; |
|
|
break; |
|
|
|
|
|
case LSCP_FAILED: |
|
|
default: |
|
|
// What's down? |
|
|
pszResult = "Failure during receive operation"; |
|
|
break; |
|
262 |
} |
} |
263 |
|
|
264 |
// Make the result official... |
// Make the result official... |
265 |
lscp_client_set_result(pClient, pszResult, iErrno); |
lscp_client_set_result(pClient, pszResult, iErrno); |
266 |
|
|
267 |
|
// Free long-buffer, if any... |
268 |
|
if (pszBuffer) |
269 |
|
free(pszBuffer); |
270 |
|
|
271 |
return ret; |
return ret; |
272 |
} |
} |
273 |
|
|
718 |
#endif // LSCP_PLIST_COUNT |
#endif // LSCP_PLIST_COUNT |
719 |
|
|
720 |
|
|
721 |
|
// Split a string into an array of MIDI instrument triplets. |
722 |
|
lscp_midi_instrument_t *lscp_midi_instruments_create ( const char *pszCsv ) |
723 |
|
{ |
724 |
|
char *pchHead, *pch; |
725 |
|
int iSize, i, j, k; |
726 |
|
lscp_midi_instrument_t *pInstrs; |
727 |
|
lscp_midi_instrument_t *pNewInstrs; |
728 |
|
|
729 |
|
// Get it clean first. |
730 |
|
pchHead = lscp_ltrim((char *) pszCsv); |
731 |
|
if (*pchHead == (char) 0) |
732 |
|
return NULL; |
733 |
|
|
734 |
|
// Initial size is one chunk away. |
735 |
|
iSize = LSCP_SPLIT_CHUNK1; |
736 |
|
// Allocate and split... |
737 |
|
pInstrs = (lscp_midi_instrument_t *) malloc(iSize * sizeof(lscp_midi_instrument_t)); |
738 |
|
if (pInstrs == NULL) |
739 |
|
return NULL; |
740 |
|
|
741 |
|
// Go on for it... |
742 |
|
i = 0; |
743 |
|
k = 0; |
744 |
|
|
745 |
|
while ((pch = strpbrk(pchHead, "{,}")) != NULL) { |
746 |
|
// Pre-advance to next item. |
747 |
|
switch (*pch) { |
748 |
|
case '{': |
749 |
|
pchHead = pch + 1; |
750 |
|
if (k == 0) { |
751 |
|
pInstrs[i].bank_msb = atoi(pchHead); |
752 |
|
k++; |
753 |
|
} |
754 |
|
break; |
755 |
|
case ',': |
756 |
|
pchHead = pch + 1; |
757 |
|
if (k == 1) { |
758 |
|
pInstrs[i].bank_lsb = atoi(pchHead); |
759 |
|
k++; |
760 |
|
} |
761 |
|
else |
762 |
|
if (k == 2) { |
763 |
|
pInstrs[i].program = atoi(pchHead); |
764 |
|
k++; |
765 |
|
} |
766 |
|
break; |
767 |
|
case '}': |
768 |
|
pchHead = pch + 1; |
769 |
|
k = 0; |
770 |
|
break; |
771 |
|
} |
772 |
|
// Do we need to grow? |
773 |
|
if (k == 3 && ++i >= iSize) { |
774 |
|
// Yes, but only grow in chunks. |
775 |
|
iSize += LSCP_SPLIT_CHUNK1; |
776 |
|
// Allocate and copy to new split array. |
777 |
|
pNewInstrs = (lscp_midi_instrument_t *) malloc(iSize * sizeof(lscp_midi_instrument_t)); |
778 |
|
if (pNewInstrs) { |
779 |
|
for (j = 0; j < i; j++) { |
780 |
|
pNewInstrs[j].bank_msb = pInstrs[j].bank_msb; |
781 |
|
pNewInstrs[j].bank_lsb = pInstrs[j].bank_lsb; |
782 |
|
pNewInstrs[j].program = pInstrs[j].program; |
783 |
|
} |
784 |
|
free(pInstrs); |
785 |
|
pInstrs = pNewInstrs; |
786 |
|
} |
787 |
|
} |
788 |
|
} |
789 |
|
|
790 |
|
// Special terminate split array. |
791 |
|
for ( ; i < iSize; i++) { |
792 |
|
pInstrs[i].bank_msb = -1; |
793 |
|
pInstrs[i].bank_lsb = -1; |
794 |
|
pInstrs[i].program = -1; |
795 |
|
} |
796 |
|
|
797 |
|
return pInstrs; |
798 |
|
} |
799 |
|
|
800 |
|
// Destroy a MIDI instrument triplet array. |
801 |
|
void lscp_midi_instruments_destroy ( lscp_midi_instrument_t *pInstrs ) |
802 |
|
{ |
803 |
|
if (pInstrs) |
804 |
|
free(pInstrs); |
805 |
|
} |
806 |
|
|
807 |
|
#ifdef LSCP_MIDI_INSTRUMENTS_COUNT |
808 |
|
|
809 |
|
// Compute a MIDI instrument array item count. |
810 |
|
int lscp_midi_instruments_count ( lscp_midi_instrument_t *pInstrs ) |
811 |
|
{ |
812 |
|
int i = 0; |
813 |
|
while (pInstrs && pInstrs[i].program >= 0) |
814 |
|
i++; |
815 |
|
return i; |
816 |
|
} |
817 |
|
|
818 |
|
// Compute a MIDI instrument array size. |
819 |
|
int lscp_midi_instruments_size ( lscp_midi_instrument_t *pInstrs ) |
820 |
|
{ |
821 |
|
return LSCP_SPLIT_SIZE(lscp_midi_instruments_count(pInstrs)); |
822 |
|
} |
823 |
|
|
824 |
|
#endif // LSCP_MIDI_INSTRUMENTS_COUNT |
825 |
|
|
826 |
|
|
827 |
//------------------------------------------------------------------------- |
//------------------------------------------------------------------------- |
828 |
// Server info struct helper functions. |
// Server info struct helper functions. |
829 |
|
|